4  * Copyright (c) 2004-2005 Vassili Karpov (malc)
27 #include "qemu/error-report.h"
43 #define SHIFT 8  macro
50 #undef SHIFT
57 #define SHIFT 8  macro
63 #undef SHIFT
74 #define SHIFT 16  macro
90 #undef SHIFT
97 #define SHIFT 16  macro
112 #undef SHIFT
120 #define SHIFT 32  macro
136 #undef SHIFT
143 #define SHIFT 32  macro
158 #undef SHIFT
274 /* macros to map [-1.f, 1.f] <-> [INT32_MIN, INT32_MAX + 1] */
296     while (samples--) {  in conv_natural_float_to_mono()
297         dst->r = dst->l = CONV_NATURAL_FLOAT(*in++);  in conv_natural_float_to_mono()
307     while (samples--) {  in conv_swap_float_to_mono()
308         dst->r = dst->l = CONV_NATURAL_FLOAT(F32S_TO_F32(*in_f32s++));  in conv_swap_float_to_mono()
318     while (samples--) {  in conv_natural_float_to_stereo()
319         dst->l = CONV_NATURAL_FLOAT(*in++);  in conv_natural_float_to_stereo()
320         dst->r = CONV_NATURAL_FLOAT(*in++);  in conv_natural_float_to_stereo()
330     while (samples--) {  in conv_swap_float_to_stereo()
331         dst->l = CONV_NATURAL_FLOAT(F32S_TO_F32(*in_f32s++));  in conv_swap_float_to_stereo()
332         dst->r = CONV_NATURAL_FLOAT(F32S_TO_F32(*in_f32s++));  in conv_swap_float_to_stereo()
353     while (samples--) {  in clip_natural_float_from_mono()
354         *out++ = CLIP_NATURAL_FLOAT(src->l + src->r);  in clip_natural_float_from_mono()
364     while (samples--) {  in clip_swap_float_from_mono()
365         *out_f32s++ = F32_TO_F32S(CLIP_NATURAL_FLOAT(src->l + src->r));  in clip_swap_float_from_mono()
375     while (samples--) {  in clip_natural_float_from_stereo()
376         *out++ = CLIP_NATURAL_FLOAT(src->l);  in clip_natural_float_from_stereo()
377         *out++ = CLIP_NATURAL_FLOAT(src->r);  in clip_natural_float_from_stereo()
387     while (samples--) {  in clip_swap_float_from_stereo()
388         *out_f32s++ = F32_TO_F32S(CLIP_NATURAL_FLOAT(src->l));  in clip_swap_float_from_stereo()
389         *out_f32s++ = F32_TO_F32S(CLIP_NATURAL_FLOAT(src->r));  in clip_swap_float_from_stereo()
406                             uint64_t *left, uint64_t *right)  in audio_sample_to_uint64()  argument
415     *left = sample->l;  in audio_sample_to_uint64()
416     *right = sample->r;  in audio_sample_to_uint64()
421                             uint64_t left, uint64_t right)  in audio_sample_from_uint64()  argument
430     sample->l = left;  in audio_sample_from_uint64()
431     sample->r = right;  in audio_sample_from_uint64()
461  * introduced.  Limited to processing 32-bit count worth of samples.
482     rate->opos = 0;  in st_rate_start()
485     rate->opos_inc = ((uint64_t) inrate << 32) / outrate;  in st_rate_start()
487     rate->ipos = 0;  in st_rate_start()
488     rate->ilast.l = 0;  in st_rate_start()
489     rate->ilast.r = 0;  in st_rate_start()
507  * st_rate_frames_out() - returns the number of frames the resampling code
524     if (rate->opos_inc == 1ULL << 32) {  in st_rate_frames_out()
533     /* last frame read was at rate->ipos - 1 */  in st_rate_frames_out()
534     ipos_end = rate->ipos - 1 + frames_in;  in st_rate_frames_out()
537     /* last frame written was at rate->opos - rate->opos_inc */  in st_rate_frames_out()
538     if (opos_end + rate->opos_inc <= rate->opos) {  in st_rate_frames_out()
541     opos_delta = opos_end - rate->opos + rate->opos_inc;  in st_rate_frames_out()
542     frames_out = opos_delta / rate->opos_inc;  in st_rate_frames_out()
544     return opos_delta % rate->opos_inc ? frames_out : frames_out - 1;  in st_rate_frames_out()
548  * st_rate_frames_in() - returns the number of frames needed to
563     if (rate->opos_inc == 1ULL << 32) {  in st_rate_frames_in()
568         opos_start = rate->opos;  in st_rate_frames_in()
569         ipos_start = rate->ipos;  in st_rate_frames_in()
574         offset = (rate->opos_inc + (1ULL << 32) - 1) & ~((1ULL << 32) - 1);  in st_rate_frames_in()
575         opos_start = rate->opos + offset;  in st_rate_frames_in()
576         ipos_start = rate->ipos + (offset >> 32);  in st_rate_frames_in()
578     /* last frame written was at opos_start - rate->opos_inc */  in st_rate_frames_in()
579     opos_end = opos_start - rate->opos_inc + rate->opos_inc * frames_out;  in st_rate_frames_in()
582     /* last frame read was at ipos_start - 1 */  in st_rate_frames_in()
583     return ipos_end + 1 > ipos_start ? ipos_end + 1 - ipos_start : 0;  in st_rate_frames_in()
593     if (vol->mute) {  in mixeng_volume()
598     while (len--) {  in mixeng_volume()
600         buf->l = buf->l * vol->l;  in mixeng_volume()
601         buf->r = buf->r * vol->r;  in mixeng_volume()
603         buf->l = (buf->l * vol->l) >> 32;  in mixeng_volume()
604         buf->r = (buf->r * vol->r) >> 32;  in mixeng_volume()